JEE 2023 — Mathematics PYQJEE | Mathematics | 2023The coefficient of x7 in (1 – x + 2x3)10 is _________.Choose the correct answer:A. 960 (Correct Answer)B. 950C. 955D. 999Correct Answer: 960ExplanationTn=a!b!c!10!(1)a(−x)b(2x3)ca+b+c=10,b+3c=7Possible values of (a, b, c): (3,7,0),(5,4,1),(7,1,2)Coefficient of x7=−120+2520−1440=960A960B950C955D999Show Answer SExplanationTn=a!b!c!10!(1)a(−x)b(2x3)ca+b+c=10,b+3c=7Possible values of (a, b, c): (3,7,0),(5,4,1),(7,1,2)Coefficient of x7=−120+2520−1440=960
